Legal claims defining the scope of protection, as filed with the USPTO.
1. A method of operating synchronous Hybrid Automatic Repeat Request (HARQ) between a transmitting station and a receiving station in a Time-Division Duplex (TDD) communication system, comprising: configuring, at the transmitting station, a plurality of HARQ processes; transmitting, via one of the plurality of HARQ processes and using a frame structure including a plurality of regions of subframes, a data burst in a first subframe to the receiving station; receiving a second subframe transmitted from the receiving station and containing a HARQ feedback indicative of whether the data burst was correctly received at the receiving station; determining whether the HARQ feedback is an acknowledgement (ACK) or a negative acknowledgement (NACK); and retransmitting, via the one of the plurality of HARQ processes, the data burst in a third subframe to the receiving station if it is determined that the HARQ feedback is a NACK, wherein a total number of the plurality of HARQ processes is determined based on a total number of uplink subframes between the first subframe and the third subframe; and wherein a time period between transmitting the first subframe by the transmitting station and transmitting the second subframe by the receiving station is determined by a processing delay of the receiving station, an A-MAP configuration, and the frame structure.
2. The method according to claim 1 , wherein the transmitting station is a subscriber station (SS) and the receiving station is a base station (BS).
3. The method according to claim 1 , wherein the plurality of regions of subframes include: a downlink region of subframes including a number of downlink subframes used for downlink communication; an uplink region of subframes including a number of uplink subframes used for unlink communication; and one or more reserved regions of subframes each including a number of subframes used for legacy zone or relay zone communication.
4. The method according to claim 1 , wherein a time period between receiving the second subframe from the receiving station and transmitting the third subframe by the transmitting station is determined by processing delay of the transmitting station, the second subframe, and the frame structure.
7. The method according to claim 6 , further provided that N is the total number of plurality of HARQ processes, and N k is a total number of uplink subframes between the first subframe and the third subframe frame, wherein N k = rt k - k - ( D + N g 1 + N g 2 + N g 3 ) × ( ⌊ rt k D + U + N g 1 + N g 2 + N g 3 ⌋ - ⌊ k D + U + N g 1 + N g 2 + N g 3 ⌋ ) , and N = max { N k , for all k = D + N g 1 + N g 2 to D + U + N g 1 + N g 2 - 1 } .
8. The method according to claim 7 , further provided that RT k is a retransmission delay defined as a total number of subframes between the first subframe and the third subframe, wherein RT k = t k - k = N + ( D + N g 1 + N g 2 + N g 3 ) × ⌊ N + [ k - ( D + N g 1 + N g 2 ) ] mod N frame U ⌋ .
9. A wireless communication station for wireless communication in a Time-Division Duplex (TDD) communication system using synchronous Hybrid Automatic Repeat Request (HARQ) between the wireless communication station and an external wireless device, the wireless communication station comprising: at least one memory to store data and instructions; and at least one processor configured to access the memory and configured to, when executing the instructions: configure a plurality of HARQ processes; transmit, via one of the plurality of HARQ processes and using a frame structure including a plurality of regions of subframes, a data burst in a first subframe to the external wireless device; receive a second subframe transmitted from the external wireless device and containing a HARQ feedback indicative of whether the data burst was correctly received at the external wireless device; determine whether the HARQ feedback is an acknowledgement (ACK) or a negative acknowledgement (NACK); and retransmit, via the one of the plurality of HARQ processes, the data burst in a third subframe to the external wireless device if it is determined that the HARQ feedback is a NACK, wherein a total number of the plurality of HARQ processes is determined based on a total number of uplink subframes between the first subframe and the third subframe; and wherein a time period between transmitting the first subframe by the wireless communication station and transmitting the second subframe by the external wireless device is determined by a processing delay of the external wireless device, an A-MAP configuration, and the frame structure.
10. The wireless communication station according to claim 9 , wherein the wireless communication station is a subscriber station (SS) and the external wireless device is a base station (BS).
11. The wireless communication station according to claim 9 , wherein the plurality of regions of subframes include: a downlink region of subframes including a number of downlink subframes used for downlink communication; an uplink region of subframes including a number of uplink subframes used for unlink communication; and one or more reserved regions of subframes each including a number of subframes used for legacy zone or relay zone communication.
12. The wireless communication station according to claim 9 , wherein a time period between receiving the second subframe from the external wireless device and transmitting the third subframe by the wireless communication station is determined by a processing delay of the wireless communication station, the second subframe, and the frame structure.
15. The wireless communication station according to claim 14 , further provided that N is the total number of plurality of HARQ processes, and N k is a total number of uplink subframes between the first subframe and the third subframe frame, wherein N k = rt k - k - ( D + N g 1 + N g 2 + N g 3 ) × ( ⌊ rt k D + U + N g 1 + N g 2 + N g 3 ⌋ - ⌊ k D + U + N g 1 + N g 2 + N g 3 ⌋ ) , and N = max { N k , for all k = D + N g 1 + N g 2 to D + U + N g 1 + N g 2 - 1 } .
16. The wireless communication station according to claim 15 , further provided that RT k is a retransmission delay defined as a total number of subframes between the first subframe and the third subframe, wherein RT k = t k - k = N + ( D + N g 1 + N g 2 + N g 3 ) × ⌊ N + [ k - ( D + N g 1 + N g 2 ) mod N frame ] U ⌋ .
Unknown
March 26, 2013
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